How to connect to a database in MySQL Workbench?

To connect to a MySQL database, first install and start the MySQL database server. Then, follow these steps to connect to the database:

1. Open the MySQL Workbench application.
2. Click on the “New Connection” button (located at the top left corner of the main interface).
3. Enter a custom connection name in the “connection name” field.
4. Enter the hostname or IP address of the database server in the “Host Name” field. If the database server is local, you can enter “localhost”.
5. Enter the port number of the database server in the “port” field. By default, MySQL uses port 3306.
6. Enter the username required to connect to the database in the “Username” field.
7. Input the password required to connect to the database in the “Password” field.
8. Click the “Test Connection” button to verify if the inputted connection information is correct.
9. If the test connection is successful, click the “OK” button to complete the connection configuration.
10. On the main interface of MySQL Workbench, you can see the connections that have been created. Double-click on a connection to enter the database.

Please note that the above steps are only applicable for connecting to an existing MySQL database server. If you need to create a new database server locally, you can download and install MySQL Community Server, and follow the installation wizard to complete the setup.

If you’re unable to connect to the database server, it may be due to one of the following reasons: the server isn’t running, incorrect hostname or IP address, incorrect port number, incorrect username or password. Please carefully check the connection information and make sure the database server is running.